2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | |
HK | 0.21 | 0.26 | 0.29 | 0.26 | 0.21 | 0.22 | 0.22 | 0.24 | 0.23 | 0.23 | - |
Singapore | −0.50 | −0.36 | −0.25 | −0.25 | −0.33 | −0.39 | −0.36 | −0.41 | −0.52 | −0.44 | −0.53 |